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congruence

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{{Wiktionary|congruence|â‰…}}Congruence (symbol: â‰…) is the state achieved by coming together, the state of agreement. The Latin meaning â€œI meet together, I agreeâ€. As an abstract term, congruence means similarity between objects. Congruence, as opposed to approximation, is a relation which implies a species of equivalence.

Mathematics

• Congruence (geometry), being isometric â€” roughly, the same size and shape
• Congruence or congruence relation, in abstract algebra, an equivalence relation on an algebraic structure that is compatible with the structure
• In modular arithmetic, having the same remainder when divided by a specified integer
• Ramanujan's congruences, congruences for the partition function, {{math|p(n)}}, first discovered by Ramanujan in 1919
• Congruence subgroup, a subgroup defined by congruence conditions on the entries of a matrix group with integer entries
• Congruence of squares, in number theory, a congruence commonly used in integer factorization algorithms
• Matrix congruence, an equivalence relation between two matrices.
• Congruence (manifolds), in the theory of smooth manifolds, the set of integral curves defined by a nonvanishing vector field defined on the manifold
• Congruence (general relativity), in general relativity, a congruence in a four-dimensional Lorentzian manifold that is interpreted physically as a model of space time, or a bundle of world lines
• Zeller's congruence, an algorithm to calculate the day of the week for any date
• Scissors congruence, related to Hilbert's third problem

Psychology

{{disambiguation}}

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